CN213655717U - Composite sealing gasket with positioning holes - Google Patents
Composite sealing gasket with positioning holes Download PDFInfo
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- CN213655717U CN213655717U CN202022607717.6U CN202022607717U CN213655717U CN 213655717 U CN213655717 U CN 213655717U CN 202022607717 U CN202022607717 U CN 202022607717U CN 213655717 U CN213655717 U CN 213655717U
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Abstract
The utility model relates to a take composite seal gasket of locating hole has set gradually metal substrate, cladding in the metal skeleton of the non-metallic coating of cladding and has bordured in the metal that distributes along the non-metallic coating inner edge from the extroversion inwards. A plurality of threaded positioning holes are correspondingly machined in the positions, corresponding to the flange face bolt holes, of the metal base plate; the surface of the metal framework is a concave-convex surface with a certain shape, and the two sides of the metal framework are coated with the non-metal coating layers; the metal inner wrapping edge wraps the inner ring for a circle, and the metal framework and the non-metal wrapping layer are completely wrapped. The utility model provides a gasket installation centering problem and flange bolt pretension when because the gasket problem of sliding that leads to is little for non-metallic material coefficient of friction, be particularly suitable for the flange joint that the flange seal face has certain slope or is difficult for the centering, have better application prospect in valve seal, equipment, pipeline.
Description
Technical Field
The utility model belongs to the technical field of the metal sealing gasket, concretely relates to take compound seal gasket of locating hole.
Background
The gasket seal is widely applied to bolt flange connection in various industries and is a key for bolt flange connection sealing. The bolt flange joint is a detachable connecting joint mainly composed of bolts, flanges and gaskets, and is widely applied to the fields of petrochemical industry, nuclear power, aerospace and the like, and the gaskets act between two flange surfaces to prevent a sealed medium from leaking or seeping out from between the two flange surfaces. Different flange seal face can select for use different gasket seal types, but adopts the RF face type mostly, and the seal gasket processing of this kind of form is simple, nevertheless can appear phenomenon such as misalignment, eccentricity when the installation is used often to lead to the gasket local pressurized uneven, appear the gasket conquassation even, leak abominable accident such as big.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a go on for solving above-mentioned technical problem, to the phenomenon such as centering, eccentricity in the valve seal gasket installation, improve current metal seal gasket, provide the composite seal gasket of taking the locating hole of one kind. In order to achieve the above object, the technical solution adopted by the present invention is summarized as follows:
the utility model provides a take composite seal gasket of locating hole has set gradually metal substrate, cladding in the metal skeleton of the non-metallic coating of cladding and has bordured in the metal that distributes along the non-metallic coating inner edge from the extroversion. A plurality of threaded positioning holes are correspondingly machined in the positions, corresponding to the flange face bolt holes, of the metal base plate; the surface of the metal framework is a concave-convex surface with a certain shape, and the two sides of the metal framework are coated with the non-metal coating layers; the metal inner wrapping edge wraps the inner ring for a circle, and the metal framework and the non-metal wrapping layer are completely wrapped.
Preferably, in the utility model provides a take composite seal gasket of locating hole, the number of screw thread locating hole is twelve, and the upper and lower left and right sides position of metal substrate respectively sets up threely.
Preferably, the utility model provides an among the composite seal gasket of area locating hole, metal framework is metal towards pinion rack, metal buckled plate or metal corrugated plate.
Preferably, in the utility model provides an among the composite seal gasket of area locating hole, the non-metallic coating coats on the metal framework two sides with prescribed size and shape according to the sealed demand of flange face.
Preferably, in the utility model provides a take composite seal gasket of locating hole, the non-metallic coating is made by flexible graphite, polytetrafluoroethylene, special rubber or no asbestos sealing material.
Preferably, in the utility model provides a take composite seal gasket of locating hole, bordure in the metal and bordure for the stainless steel.
The utility model discloses beneficial technological effect:
firstly, because a plurality of threaded positioning holes are correspondingly processed on the metal substrate corresponding to the positions of the bolt holes on the flange surface, the bolts of the flange can pass through the bolt holes of the flange and the threaded positioning holes when being pre-tightened, the centering reliability of the composite sealing gasket is ensured, and meanwhile, the condition that the gasket slides when the bolts of the flange are pre-tightened is avoided. Therefore, the structure has the centering installation function, solves the problems of gasket installation and centering and gasket sliding caused by small friction coefficient of non-metallic materials when the flange bolts are pre-tightened, is particularly suitable for flange connection with a flange sealing surface inclined to a certain degree or not easy to center, and has a better application prospect in valve sealing, equipment and pipelines.
Secondly, the surface of the metal framework is a concave-convex surface with a certain shape, and the two sides of the metal framework are coated with the non-metal coating layers; meanwhile, the arrangement of the inner metal wrapping edge completely wraps the metal framework and the non-metal wrapping layer and is attached to the edge of the inner ring of the metal framework, no gap is reserved, and interface leakage caused by the gap between the non-metal wrapping material and the metal framework is reduced.
Therefore, the utility model provides a centering, eccentric problem not in the valve seal gasket installation, borrow the centering ring principle of reference metal winding pad, need not make great change to traditional gasket, practicality and commonality are very strong.
Drawings
Fig. 1 is a schematic structural view of a composite sealing gasket with positioning holes according to an embodiment of the present invention;
fig. 2 is a schematic view of the sectional structure of the composite sealing gasket with positioning holes in the embodiment of the present invention.
Detailed Description
The following detailed description will be made in conjunction with the drawings and examples of the present invention, and the following examples are implemented on the premise of the technical solution of the present invention, and the detailed embodiments and specific operation processes are given, but the scope of the present invention is not limited to the following examples.
Referring to fig. 1 and 2, the composite sealing gasket 100 with positioning holes is annular, and a metal substrate 1, a metal framework 2 coated with a non-metal coating layer 3, and a metal inner wrapping 4 are sequentially arranged from outside to inside.
The sizes of the metal base plate 1 and the metal framework 2 are determined according to the size of the flange, and a plurality of threaded positioning holes 11 with the same size are correspondingly machined in positions corresponding to bolt holes on the flange surface. During installation, bolts of the flange pass through the bolt holes of the flange and the bolt holes 11 of the metal substrate layer during pre-tightening, the centering reliability of the composite sealing gasket is guaranteed, and meanwhile the situation that the gasket slides when the bolts of the flange are pre-tightened is avoided. In this embodiment, the number of the screw positioning holes 11 is twelve, and three screw positioning holes are provided at the upper, lower, left, and right positions of the metal substrate.
The surface of the metal framework 2 is processed with a specific shape, such as a metal toothed plate, a metal corrugated plate or a metal corrugated plate; the nonmetal coating layer 3 is coated on the two surfaces of the metal framework in a specified size and shape according to the sealing requirement of the flange surface, and is matched with the specific shape on the surface of the metal framework 2 to reduce the gap between the nonmetal coating layer and the metal framework and realize sealing. In this embodiment, the non-metal coating layer 3 is made of flexible graphite, polytetrafluoroethylene, special rubber or asbestos-free sealing material.
The metal inner wrapping edge 4 is a stainless steel wrapping edge, wraps the inner ring for a circle, completely wraps the metal framework 2 and the non-metal wrapping layer 3, is attached to the edge of the inner ring, and does not leave a gap, so that the sealing performance of the composite gasket is enhanced, and interface leakage caused by the gap between the non-metal wrapping material and the metal framework is reduced.
In conclusion, this embodiment structure has the centering installation function, has solved gasket installation centering problem and the gasket problem of sliding that leads to because non-metallic material coefficient of friction is little when the flange bolt pretension, is particularly suitable for the flange joint that the flange seal face has certain slope or is difficult for the centering, has better application prospect in valve seal, equipment, pipeline. Simultaneously, the centering, the eccentric problem of misalignment among the valve seal gasket installation has been solved to this embodiment, uses for reference the centering ring principle of metal winding pad, need not make great change to traditional gasket, and practicality and commonality are very strong.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited thereto, and that various changes and modifications may be made without departing from the spirit of the invention.
Claims (6)
1. A composite sealing gasket with a positioning hole is characterized in that a metal substrate, a metal framework coated with a non-metal coating layer and a metal inner wrapping edge distributed along the inner edge of the non-metal coating layer are sequentially arranged from outside to inside,
wherein, a plurality of threaded positioning holes are correspondingly processed on the metal base plate corresponding to the positions of the bolt holes on the flange surface,
the surface of the metal framework is a concave-convex surface with a certain shape, the nonmetal coating layers are coated on two sides of the metal framework,
the metal inner wrapping edge wraps the inner ring for a circle, and the metal framework and the non-metal wrapping layer are completely wrapped.
2. The composite sealing gasket with pilot hole according to claim 1, wherein:
the number of the threaded positioning holes is twelve, and the upper position, the lower position, the left position and the right position of the metal substrate are respectively provided with three threaded positioning holes.
3. The composite sealing gasket with pilot hole according to claim 1, wherein:
wherein, the metal framework is a metal stamping plate, a metal corrugated plate or a metal corrugated plate.
4. The composite sealing gasket with pilot hole according to claim 3, wherein:
the nonmetal coating layers are coated on the two surfaces of the metal framework in a specified size and shape according to the sealing requirement of the flange surface.
5. The composite sealing gasket with pilot hole according to claim 3, wherein:
wherein, the non-metal coating layer is made of flexible graphite, polytetrafluoroethylene, special rubber or asbestos-free sealing material.
6. The composite sealing gasket with pilot hole according to claim 1, wherein:
wherein, the metal inner wrapping edge is a stainless steel wrapping edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607717.6U CN213655717U (en) | 2020-11-12 | 2020-11-12 | Composite sealing gasket with positioning holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607717.6U CN213655717U (en) | 2020-11-12 | 2020-11-12 | Composite sealing gasket with positioning holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213655717U true CN213655717U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022607717.6U Active CN213655717U (en) | 2020-11-12 | 2020-11-12 | Composite sealing gasket with positioning holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213655717U (en) |
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2020
- 2020-11-12 CN CN202022607717.6U patent/CN213655717U/en active Active
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